walker



A. J. WALKER.

Lamp Extinguisher.

No. 9,751. Patented May 24, 1853.

FFICE.

ALEX. J. WALKER, OF NEW YORK, N. Y.

SPIRIT-LAMP.

Specification of Letters Patent No. 9,751, dated May 24, 1853.

T0 aZZ whom it may concern Be it known that I, ALEXANDER J. WALKER, of the city, county, and State of New York, have invented a new and useful Improvement in Safety SpiritLamps; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a side elevation of a lamp. Fig. 2 is a perspective view of the cap of the lamp detached, and Fig. 3 is a perspective view of a portion of the lamp with the safety cap taken off. This view shows the ring flange on the inside of the lamp upon which the lower plate of the safety cap rests when the said cap is screwed on tight. Fig.

t is a vertical section of the lamp with the safety cap screwed on to it.

Similar letters of reference in each of the several figures indicate corresponding parts.

The invention relates to an improvement in the safety spirit lamp and consists in constructing the said lamp in the following manner to wit: Securing the inner tubes, which carry the wick, fast in a circular movable plate, the said plate being connected to the cap or cover by means of a vertical rod having a spiral spring wound on it, the said spring being situate between the cap and said plate and serving to force the said plate down over the said vertical rod when the cap is unscrewed and thereby draw the inner tubes downward and consequently cause the outer tubes to extinguish the light instantaneously. This spring also serves to keep the circular protection plate firmly down against a circular flange formed around the inside of the neck of the lamp and thereby prevents the fluid possibly getting above said plate except through the in ner tubes and becoming heated and exploding, The objects effected by this arrangement are these: The inner and outer tubes can be withdrawn from the lamp at once when it is desired to insert the wick and fill the lamp, and also a protection plate can be employed to prevent the fluid rising above the proper height and thereby avoid explosions taking place, and the lamp can be made more compact and rendered more safe, and

consequently can be more easily managed than the ordinary safety spirit lamp.

To enable others to make and use my invention I will proceed to describe its construction and use more fully.

A, represents the lamp made in the manner shown in Fig. 4 or in any other more suitable way.

B, is a movable protection plate in which the inner tubes C, C, are secured fast, as shown in Figs. 2 and 4c. This plate rests on the flange D, and is kept tight in that position by the spiral spring E, Figs. 2 and 4, and thereby the fluid is prevented from rising too high and getting heated and exploding. This spring is wound on the vertical rod F, which connects the cap G, to the plate B, in the manner shown in Fig. 2. The spring allows of the plate B, being made movable. The cap and tubes H, H, slide loosely up and down over the inner tubes when the said top G, is removed or screwed on. The vertical rod slides freely in the circular opening a, in the center of the plate B, when the top is screwed on and taken olf. By this arrangement I efiect two important objects more perfectly than heretofore, viz: that of exposing the wick tubes at the time necessary so as to light the lamp and lowering the same or hiding them from View and extinguishing the light instantaneously when the cap is unscrewed and the outer tubes forced upward by the spiral spring.

The top G, by being connected to the circular springing or movable protection plate can be managed much easier than the common stationary wick tubes secured in a stationary bar and separate cap or top, for the top plate, all the tubes, &-c., can be taken out of my lamp connected together and the wicks can be on this account more easily passed through the tubes.

I do not claim the employment of the inner wick tubes secured in a stationary bar and having other tubes sliding over them which extinguish the light when the top of the lamp is unscrewed, but

What I do claim as new and desire to secure by Letters Patent, is-

The employment of the plate B, which neously after the top has been unscrewed, the Whole being constructed, arranged, and 10 operating in the manner herein shown and described.

ALEX. J. WALKER. Witnesses A. D. MUNN, S. H. WALES. 

